You can "stand by your numbers" as much as you want. It won't make them correct.
I like people that question what they are told by the mejia and i fit into this group myself because I think that the block-chain solved a few
problems but created many more which as a developer I have been saying for about a year and now it looks like i am being proved right.
Then to be intellectually honest about it, at a minimum, you need to also use:
Total number of blocks in the blockchain: 499273 (as I'm typing this)
But when BTC was a mere $0.15 then it was more or less just a test network used by students so your theory is not valid since we are talking about prices today
were volumes and winning prizes are much, much higher
Trying to work out an actual number for the cost of producing one BTC must be a guestimated number since the number of nodes will go up or down
but i see no reason to argue with the many, many sites that put the number between $1k-2k in energy alone and not all the sites saying this
are working for green-peace or seem to have a vested interest in BTC